File indexing completed on 2024-05-12 15:58:13

 /*
  *  SPDX-FileCopyrightText: 2010 Cyrille Berger <cberger@cberger.net>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #ifndef _KIS_CUBIC_CURVE_H_
 #define _KIS_CUBIC_CURVE_H_
 
 #include<QList>
 #include<QVector>
 #include<QVariant>
 
 #include <kritaimage_export.h>
 
 class QPointF;
 
 const QString DEFAULT_CURVE_STRING = "0,0;1,1;";
 
 /**
  * Hold the data for a cubic curve.
  */
 class KRITAIMAGE_EXPORT KisCubicCurve
 {
 public:
     KisCubicCurve();
     KisCubicCurve(const QList<QPointF>& points);
     KisCubicCurve(const QVector<QPointF>& points);
     KisCubicCurve(const KisCubicCurve& curve);
     ~KisCubicCurve();
     KisCubicCurve& operator=(const KisCubicCurve& curve);
     bool operator==(const KisCubicCurve& curve) const;
 public:
     qreal value(qreal x) const;
     const QList<QPointF>& points() const;
     void setPoints(const QList<QPointF>& points);
     void setPoint(int idx, const QPointF& point);
     /**
      * Add a point to the curve, the list of point is always sorted.
      * @return the index of the inserted point
      */
     int addPoint(const QPointF& point);
     void removePoint(int idx);
 
     /*
      * Check whether the curve maps all values to themselves.
      */
     bool isIdentity() const;
 
     /*
      * Check whether the curve maps all values to given constant.
      */
     bool isConstant(qreal c) const;
 
     /**
      * This allows us to carry around a display name for the curve internally. It is used
      * currently in Sketch for perchannel, but would potentially be useful anywhere
      * curves are used in the UI
      */
     void setName(const QString& name);
     const QString& name() const;
 
     static qreal interpolateLinear(qreal normalizedValue, const QVector<qreal> &transfer);
 
 public:
     const QVector<quint16> uint16Transfer(int size = 256) const;
     const QVector<qreal> floatTransfer(int size = 256) const;
 public:
     QString toString() const;
     void fromString(const QString&);
 private:
     struct Data;
     struct Private;
     Private* const d {nullptr};
 };
 
 Q_DECLARE_METATYPE(KisCubicCurve)
 
 #endif